got a 96 12v.dout anyone ever had the valves reset.truck got 330000 miles and im trying to catch up on some maintnance.thing is i went to set them and i couldnt get the timing pin to go in.that is it on top the power steering pump right.please dont tell me i got to take that all down.please tell me theres another way

 

pull the pin out and see if it's broken.

it's pretty hard to get the pin in the hole. it needs some hair around it. Take your time and you'll get it in.

 

just watch cyl 1 when intake valve closes and exhaust doesnt open immediately after while barring you are on compression. adjust valves on cyl1 then rotate until cyl 5 does the same intake closes completely repeat adjustment. i adjust to .010 intake and .019 on my 12v firing order is 153624 just remember 15 shes too young 36 shes too old 24 shes just right takes alot less time doing it this way

 

^ hahaha i love that

 

Hey now some of us old guys would be happy as hell with 36

 

If worse comes to worse take you num 1 injector out and use a small puch or screwdriver and watch the piston travel and the intake and I mark your Crank once you find TDC and next time you will just have to watch for the mark.

 

Use the valve overlap to find TDC. If you are using the alternator nut then the engine is going backwards so watch #1 intake valve, it will open and shut but right before it shuts the exhaust will start to open, once you see the exhaust valve move, STOP.

Alternatively, if you are cranking the engine over forwards, watch the exhaust open and close and right before it closes the intake will open, once you see the intake start to move, STOP.

It does NOT have to be any more accurate than that, in fact it can be wayyy off. I have put a dial indicator on the valves to determine where the exact base circle is and yeah you can screw up pretty bad and be fine, just as long as you know which phase you are on since you adjust one set of valves then the other. Jiggle them and you will quickly find out which phase you are on.

 

Have you done kdp fix yet? If not you can fix the kdp, reseal the timing cover, and mark the balancer and cover for tdc for future timing purposes and valve adjustments. You'll also know exactly where it is regardless of timing pin condition. Also a good time to check timing.

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does anyone know whats the tolerable valve lash? for a 12v. or link to a writeup

 

I think its 10 intake and 20 exhaust.